Combined smoke gasket and intumescent expanding seal device for sliding doors



FIG. 1 is a front perspective view, viewed from above, of a combined smoke gasket and intumescent expanding seal device for sliding doors showing my new design;

FIG. 2 is a rear perspective view thereof, viewed from above; and

FIG. 3 is a horizontal sectional view thereof, taken along the line 3--3 of FIG. 1. 

The ornamental design for a combined smoke gasket and intumescent expanding seal device for sliding doors, as shown. 